物联网学报2025，Vol.9Issue(3)：28-36,9.DOI:10.11959/j.issn.2096-3750.2025.00468
基于正交时频空间—通信感知一体化的无人机定位精度分析
Analysis of UAV positioning accuracy based on OTFS-ISAC
摘要
Abstract
Unmanned aerial vehicles(UAVs)are widely used in various scenarios.The integrated sensing and communi-cation(ISAC)technology offers new opportunities to meet the huge demands of UAVs for positioning.Orthogonal time frequency space(OTFS),due to its delay-Doppler domain modulation characteristics,can well satisfy the sensing require-ments of the ISAC system in high-speed mobile scenarios.However,in millimeter-wave(mmWave)/terahertz frequency band,when OTFS-ISAC based on large antenna arrays meets a high-speed moving UAV,Doppler effect and beam squint effect cannot be ignored.In response to the beam squint effect,an iterative algorithm based on the fast Fourier transform(FFT)was proposed for positioning estimation.Through experimental simulation and analysis,it is proved that this algorithm can effectively approach the Cramér-Rao lower bound(CRLB).关键词
通信感知一体化/无人机/多普勒效应/波束斜视/定位Key words
ISAC/UAV/Doppler effect/beam squint/positioning分类
信息技术与安全科学引用本文复制引用
雷霆,姜帆,巩紫君,吴慧慈,陶小峰..基于正交时频空间—通信感知一体化的无人机定位精度分析[J].物联网学报,2025,9(3):28-36,9.基金项目
国家自然科学基金资助项目(No.62327801)The National Natural Science Foundation of China(No.62327801) （No.62327801）
